cos^2(70)-sin^2(70)

Lösung

cos^{2} (7 0^{\circ}) - sin^{2} (7 0^{\circ})

- 0.76604 \dots

Schritte zur Lösung

cos^{2} (7 0^{\circ}) - sin^{2} (7 0^{\circ})

Vereinfache zur Dezimalform

= - 0.76604 \dots

cos (π) sin (π)

sec (\frac{π}{2}) tan (\frac{π}{2}) - sec^{2} (\frac{π}{2})

150 cos (4 0^{\circ})

\frac{π}{2} - sin (\frac{π}{2})

- 2 sin^{2} (2 π)